prepare for optional addition of line renderer for lean version

Author: Byron

Diff for: Cargo.lock

@@ -40,6 +40,9 @@ pretty-cli = ["structopt",
               "smol"]
 lean-cli = ["argh", "git-features/progress-log", "env_logger"]
 
+prodash-line-renderer-crossterm = ["prodash/line-renderer", "prodash/line-renderer-crossterm"]
+prodash-line-renderer-termion = ["prodash/line-renderer", "prodash/line-renderer-termion"]
+
 [dependencies]
 anyhow = "1.0.31"
 

Diff for: Cargo.toml

@@ -174,6 +174,9 @@ The top-level command-line interface.
 * **lean-cli** _(mutually exclusive to pretty-cli)_
   * Use `argh` to produce a usable binary with decent documentation that is smallest in size, usually 300kb less than `pretty-cli`.
   * If `pretty-cli` is enabled as well, `small-cli` will take precedence, and you pay for building unnecessary dependencies.
+* **prodash-line-renderer-crossterm** or **prodash-line-renderer-termion** _(mutually exclusive)_
+  * The `--verbose` flag will be powered by an interactive progress mechanism that doubles as log as well as interactive progress
+    that appears after a short duration.
 
 There are convenience features, which combine common choices of the above into one name
 

Diff for: README.md

@@ -15,3 +15,6 @@ fn main() -> Result<()> {
 fn main() -> Result<()> {
     plumbing::lean::main()
 }
+
+#[cfg(not(any(feature = "pretty-cli", feature = "lean-cli")))]
+compile_error!("Please set 'lean-cli' or 'pretty-cli' feature flags");

Diff for: src/plumbing-cli.rs

@@ -41,6 +41,15 @@ use git_features::progress;
 use gitoxide_core as core;
 use std::io::{stderr, stdout};
 
+#[cfg(not(any(
+    feature = "prodash-line-renderer-crossterm",
+    feature = "prodash-line-renderer-termion"
+)))]
+fn prepare(verbose: bool, name: &str) -> ((), progress::Log) {
+    super::init_env_logger(verbose);
+    ((), progress::Log::new(name, Some(1)))
+}
+
 pub fn main() -> Result<()> {
     pub use options::*;
     let cli: Args = crate::shared::from_env();
@@ -50,10 +59,10 @@ pub fn main() -> Result<()> {
             verbose,
             statistics,
         }) => {
-            super::init_env_logger(verbose);
+            let (_handle, progress) = prepare(verbose, "verify-pack");
             core::verify_pack_or_pack_index(
                 path,
-                progress::Log::new("verify-pack", Some(1)).into(),
+                progress.into(),
                 if statistics {
                     Some(core::OutputFormat::Human)
                 } else {